P0C55 – BMW DTC

BMW DTC P0C55 – Drive Motor ‘B’ Position Sensor Circuit ‘A’

DTC P0C55 meaning on BMW

DTC P0C55 indicates an issue with the Drive Motor ‘B’ Position Sensor Circuit ‘A’ in a BMW vehicle. This fault code specifically points to a problem with the position sensor circuit for the drive motor ‘B’, which is a crucial component in the vehicle’s hybrid or electric powertrain system.

BMW DTC P0C55 symptoms

Symptoms of DTC P0C55 in a BMW may include:

• Check Engine Light (MIL) illuminated
• Reduced power or performance
• Vehicle may go into a limp mode
• Issues with hybrid or electric drive functionality

BMW DTC P0C55 causes

Common causes of DTC P0C55 in a BMW include:

• Faulty drive motor ‘B’ position sensor
• Wiring or connection issues in the sensor circuit
• Electronic control module (ECM) software glitches

BMW DTC P0C55 seriousness

The seriousness of DTC P0C55 on a BMW depends on the underlying cause and the extent of the issue. Ignoring this fault code can lead to drivability issues and potential damage to the vehicle’s powertrain components. It is recommended to address this problem promptly to prevent further complications.

How to diagnose DTC P0C55 on BMW

To diagnose DTC P0C55 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the drive motor ‘B’ position sensor and its wiring for any visible damage or corrosion
3. Perform a continuity test on the sensor circuit to check for any open or short circuits
4. Check the ECM for any related fault codes or software updates

How to fix DTC P0C55 on BMW

To fix DTC P0C55 on a BMW, consider the following:

1. Replace the faulty drive motor ‘B’ position sensor if necessary
2. Repair any damaged wiring or connections in the sensor circuit
3. Clear the fault code and perform a test drive to verify the repair
4. If the issue persists, consult a professional mechanic for further diagnosis and repair

How to erase DTC P0C55 on BMW

To erase DTC P0C55 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s ECM memory. Follow these steps:

1. Connect the diagnostic scanner to the OBD-II port of the BMW
2. Select the option to erase fault codes or clear DTCs
3. Follow the on-screen prompts to complete the process
4. After clearing the code, perform a test drive to ensure the fault code does not return

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.